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Method and device for producing flour and/or semolina

A coarse-grained and powdered technology, applied in the field of material bed roller mills, can solve problems such as roller vibration and unreliable grinding, and achieve high grinding energy efficiency and good process effects

Active Publication Date: 2014-04-30
BUEHLER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these known methods and the corresponding devices have the disadvantage that the coarser particles in the grinding stock are not reliably ground, and since the milling stock to be processed usually also contains particles of approximately the size of the roll gap Roller vibration occurs

Method used

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  • Method and device for producing flour and/or semolina
  • Method and device for producing flour and/or semolina
  • Method and device for producing flour and/or semolina

Examples

Experimental program
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Embodiment Construction

[0108] figure 1 The material bed roller mill 9 is shown in a schematic side view. The bulk stock 6 contains finer ground material 5 and coarser ground material 7 , which is fed into the grinding gap d by means of two rollers 10 , 11 rotating in direction r.

[0109] The roller 10 is mounted movable in the direction s, ie perpendicular to this direction of rotation, so that the grinding gap d can be adjusted. Both rollers 10 , 11 have a diameter w of 600 mm and are supported for rotation in direction r by means of bearings 20 . These rollers have a smooth roller surface 19 . The bearing 20 has a damping mechanism 26 in the form of a pneumatic damping mechanism to avoid vibrations.

[0110] In this case, the grinding gap d can be variable depending on the bulk material 6 fed in, the pressure acting in the direction of the grinding gap d is adjusted here by means of the rollers 10, 11, so that finer grinding The ground material 5 is comminuted with the help of a dense particl...

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Abstract

The invention relates to a method for producing flour and / or semolina from material, the material being fed from a fill (6) into a feed opening of a roller press (9). The milling gap (d) of the roller press (9) is fixed, or damping of at least one of the rollers with respect to the lateral deflection is set, such that a first subset of the fill containing finer milling material (5) forms a packed particle fill in the milling gap (d). In addition, the setting is carried out in such a way that individual particles of a second subset of the fill containing coarser milling material (7) are in contact with the first roller (10) and the second roller (11) of the roller press (9). Subsequently, the bulk material is milled into milled product (17) in the roller press (9) and the milled product (17) is discharged through a discharge opening.

Description

technical field [0001] The present invention relates to a method for producing powder and / or granulate as well as a material bed roller mill and its use according to the preambles of the independent claims. Background technique [0002] Methods and devices for producing powders and / or granules are known per se. For example EP0335925B1 discloses a method and a device for producing cereal milling products such as flour (rice), semolina or semolina according to the overhead mill principle. Here, the ground material is ground several times and screened repeatedly. Furthermore, the milled material is led through a twin-roller milling stage, where the milled material is led through at least two such milling stages, but unscreened between the stages, and between the double milling stages were then screened separately. [0003] However, such devices have the disadvantage of high equipment costs and high outlay due to the need for several milling stages. Also, the use of multiple...

Claims

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Application Information

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IPC IPC(8): B02C4/06B02C4/08B02C4/30B02C4/38
CPCB02C4/06B02C4/38B02C4/30B02C4/08B02C4/32
Inventor S·魏曼D·里肯巴赫M·卢金
Owner BUEHLER AG